the hadean era was full of scorched earth,volcano eruptions,and asteroid strikes every other day.during this time there was no life because the earth was just too hot.
in the archeon period there was no oxygen gas on earth except in the ocean kinda.around this time microbes were existing in the ocean.we learned of such microbes through micro fossils.
thepaleo protozoiceon was when the first stabilized.the only forms of life during this era were microbes.during this era new ocean basins were being formed due to the continents previousley shifting.
during the mesoprotozoic the ocean was anorexic ferruiginous.during this era there were sighns of eukeriotes and ocean microbes and bacterea may have started to evolve.
the cryogenia era was a massive iceage that covered the whole earth.around this era complex life started to appear such as fish,corals,and jellyfish.during this era massive mounds of ice the size of continents formed over great portions of the ocean and land.
during the Tonia era a great amount of the ice covering earth had melted away although it was still prominent near earths poles.during this time earths ocean levels were increasing drastically due to all of the melted ice.also a great number of earths continents had combined to form the super continent known as rodinia.
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